#Sum&Product of Quadratic, Discriminant, and Quadratic formula

40 messages · Page 1 of 1 (latest)

half stoneBOT
manic socket
#

yeah I can help you, do you just need help with figuring out how to use the quadratic formula?

#

aite, so you remember the quadratic equation right? ax^2 + bx + c = 0

#

you kinda see how it’s in that form or close to it?

#

ok now in your quadratic formula you as well have a, b, and c

#

you kinda have to get the equation into that quadratic equation form, but if it’s already in that, than all you really gotta do is plug in and solve

#

so like x^2 = 3x as an example for one of those ones you gotta change

#

lets try 2x^2 + 2x + 24 = 0

#

sure

#

is that suppose to be 2(4)?

#

(on the top)

#

it’s fine man 👍👍

#

oh I see

#

Letme check rq

celest fable
#

i can help too i am taking the sat s on march so i did go through quadratic equation s

manic socket
celest fable
#

hi how is it going with you

manic socket
#

decent, just woke up lol

#

anyways

celest fable
#

are you fine explaining do you have something i can help with

manic socket
#

^

#

quadratic formula questions

celest fable
#

which will look like this (x-number)(x+number)

#

now the numbers to get them we need to check something in time table that gives us - 8 which can be 18 and 24 right but our issue is when adding these same number to each other they have to qive us -7

#

so the only two numbers are 1*-8=-8 at the same time 1+(-8)=-7

#

so inside the brackets will be (x-8)(x+1)

#

which will equal=0 because the main equation says that so we will take the first bracket then say x+1=0 then x=-1 same way to the other one which will then equal to x=8

#

but

#

for quadratic issue : first : the quadratic formula x=(-b+-rootof b^2 -4ac)/2a

#

secound the quadratic main equation is y=ax^2+bx+c

#

so how do we use the quadratic formula and ake use the quadratic equations main form

manic socket
#

this guy can explain it better than I can, gl with ur homework

#

👍👍👍

celest fable
#

for example x^2 +5x-14=0 here in your question the first step is to write the main form ax^2+bx+c=0 so lets compare to the questions equations which : we have a=1 because there is no number then b=5 and finally c=-14

#

see now its easy all we got to do is plug were the quadratic formula writes b by the value of b we have in the equation which will be 5 then go the same with the others

#

try it then tell me how it works out with you

#

for the sum of quadratic you can use this rule sum=-b\a product= c/a

celest fable
#

if that is the question then do it with the quad formula